mirror of
https://github.com/prometheus/prometheus.git
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877320784b
This commit adds an alert in the prometheus mixin which triggers when Prometheus has failed scrapes that have exceeded the configured sample_limit for that job. Signed-off-by: fpetkovski <filip.petkovsky@gmail.com>
457 lines
20 KiB
Plaintext
457 lines
20 KiB
Plaintext
{
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prometheusAlerts+:: {
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groups+: [
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{
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name: 'prometheus',
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rules: [
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{
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alert: 'PrometheusBadConfig',
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expr: |||
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# Without max_over_time, failed scrapes could create false negatives, see
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# https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.
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max_over_time(prometheus_config_last_reload_successful{%(prometheusSelector)s}[5m]) == 0
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||| % $._config,
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'for': '10m',
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labels: {
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severity: 'critical',
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},
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annotations: {
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summary: 'Failed Prometheus configuration reload.',
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description: 'Prometheus %(prometheusName)s has failed to reload its configuration.' % $._config,
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},
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},
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{
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alert: 'PrometheusNotificationQueueRunningFull',
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expr: |||
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# Without min_over_time, failed scrapes could create false negatives, see
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# https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.
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(
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predict_linear(prometheus_notifications_queue_length{%(prometheusSelector)s}[5m], 60 * 30)
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>
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min_over_time(prometheus_notifications_queue_capacity{%(prometheusSelector)s}[5m])
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)
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus alert notification queue predicted to run full in less than 30m.',
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description: 'Alert notification queue of Prometheus %(prometheusName)s is running full.' % $._config,
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},
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},
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{
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alert: 'PrometheusErrorSendingAlertsToSomeAlertmanagers',
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expr: |||
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(
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rate(prometheus_notifications_errors_total{%(prometheusSelector)s}[5m])
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/
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rate(prometheus_notifications_sent_total{%(prometheusSelector)s}[5m])
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)
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* 100
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> 1
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus has encountered more than 1% errors sending alerts to a specific Alertmanager.',
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description: '{{ printf "%%.1f" $value }}%% errors while sending alerts from Prometheus %(prometheusName)s to Alertmanager {{$labels.alertmanager}}.' % $._config,
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},
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},
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{
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alert: 'PrometheusNotConnectedToAlertmanagers',
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expr: |||
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# Without max_over_time, failed scrapes could create false negatives, see
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# https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.
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max_over_time(prometheus_notifications_alertmanagers_discovered{%(prometheusSelector)s}[5m]) < 1
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||| % $._config,
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'for': '10m',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus is not connected to any Alertmanagers.',
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description: 'Prometheus %(prometheusName)s is not connected to any Alertmanagers.' % $._config,
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},
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},
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{
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alert: 'PrometheusTSDBReloadsFailing',
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expr: |||
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increase(prometheus_tsdb_reloads_failures_total{%(prometheusSelector)s}[3h]) > 0
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||| % $._config,
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'for': '4h',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus has issues reloading blocks from disk.',
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description: 'Prometheus %(prometheusName)s has detected {{$value | humanize}} reload failures over the last 3h.' % $._config,
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},
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},
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{
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alert: 'PrometheusTSDBCompactionsFailing',
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expr: |||
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increase(prometheus_tsdb_compactions_failed_total{%(prometheusSelector)s}[3h]) > 0
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||| % $._config,
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'for': '4h',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus has issues compacting blocks.',
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description: 'Prometheus %(prometheusName)s has detected {{$value | humanize}} compaction failures over the last 3h.' % $._config,
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},
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},
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{
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alert: 'PrometheusNotIngestingSamples',
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expr: |||
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(
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rate(prometheus_tsdb_head_samples_appended_total{%(prometheusSelector)s}[5m]) <= 0
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and
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(
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sum without(scrape_job) (prometheus_target_metadata_cache_entries{%(prometheusSelector)s}) > 0
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or
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sum without(rule_group) (prometheus_rule_group_rules{%(prometheusSelector)s}) > 0
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)
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)
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||| % $._config,
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'for': '10m',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus is not ingesting samples.',
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description: 'Prometheus %(prometheusName)s is not ingesting samples.' % $._config,
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},
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},
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{
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alert: 'PrometheusDuplicateTimestamps',
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expr: |||
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rate(prometheus_target_scrapes_sample_duplicate_timestamp_total{%(prometheusSelector)s}[5m]) > 0
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||| % $._config,
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'for': '10m',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus is dropping samples with duplicate timestamps.',
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description: 'Prometheus %(prometheusName)s is dropping {{ printf "%%.4g" $value }} samples/s with different values but duplicated timestamp.' % $._config,
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},
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},
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{
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alert: 'PrometheusOutOfOrderTimestamps',
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expr: |||
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rate(prometheus_target_scrapes_sample_out_of_order_total{%(prometheusSelector)s}[5m]) > 0
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||| % $._config,
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'for': '10m',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus drops samples with out-of-order timestamps.',
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description: 'Prometheus %(prometheusName)s is dropping {{ printf "%%.4g" $value }} samples/s with timestamps arriving out of order.' % $._config,
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},
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},
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{
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alert: 'PrometheusRemoteStorageFailures',
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expr: |||
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(
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(rate(prometheus_remote_storage_failed_samples_total{%(prometheusSelector)s}[5m]) or rate(prometheus_remote_storage_samples_failed_total{%(prometheusSelector)s}[5m]))
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/
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(
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(rate(prometheus_remote_storage_failed_samples_total{%(prometheusSelector)s}[5m]) or rate(prometheus_remote_storage_samples_failed_total{%(prometheusSelector)s}[5m]))
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+
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(rate(prometheus_remote_storage_succeeded_samples_total{%(prometheusSelector)s}[5m]) or rate(prometheus_remote_storage_samples_total{%(prometheusSelector)s}[5m]))
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)
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)
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* 100
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> 1
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'critical',
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},
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annotations: {
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summary: 'Prometheus fails to send samples to remote storage.',
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description: 'Prometheus %(prometheusName)s failed to send {{ printf "%%.1f" $value }}%% of the samples to {{ $labels.remote_name}}:{{ $labels.url }}' % $._config,
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},
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},
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{
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alert: 'PrometheusRemoteWriteBehind',
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expr: |||
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# Without max_over_time, failed scrapes could create false negatives, see
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# https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.
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(
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max_over_time(prometheus_remote_storage_highest_timestamp_in_seconds{%(prometheusSelector)s}[5m])
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- ignoring(remote_name, url) group_right
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max_over_time(prometheus_remote_storage_queue_highest_sent_timestamp_seconds{%(prometheusSelector)s}[5m])
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)
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> 120
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'critical',
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},
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annotations: {
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summary: 'Prometheus remote write is behind.',
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description: 'Prometheus %(prometheusName)s remote write is {{ printf "%%.1f" $value }}s behind for {{ $labels.remote_name}}:{{ $labels.url }}.' % $._config,
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},
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},
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{
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alert: 'PrometheusRemoteWriteDesiredShards',
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expr: |||
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# Without max_over_time, failed scrapes could create false negatives, see
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# https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.
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(
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max_over_time(prometheus_remote_storage_shards_desired{%(prometheusSelector)s}[5m])
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>
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max_over_time(prometheus_remote_storage_shards_max{%(prometheusSelector)s}[5m])
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)
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus remote write desired shards calculation wants to run more than configured max shards.',
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description: 'Prometheus %(prometheusName)s remote write desired shards calculation wants to run {{ $value }} shards for queue {{ $labels.remote_name}}:{{ $labels.url }}, which is more than the max of {{ printf `prometheus_remote_storage_shards_max{instance="%%s",%(prometheusSelector)s}` $labels.instance | query | first | value }}.' % $._config,
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},
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},
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{
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alert: 'PrometheusRuleFailures',
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expr: |||
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increase(prometheus_rule_evaluation_failures_total{%(prometheusSelector)s}[5m]) > 0
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'critical',
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},
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annotations: {
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summary: 'Prometheus is failing rule evaluations.',
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description: 'Prometheus %(prometheusName)s has failed to evaluate {{ printf "%%.0f" $value }} rules in the last 5m.' % $._config,
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},
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},
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{
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alert: 'PrometheusMissingRuleEvaluations',
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expr: |||
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increase(prometheus_rule_group_iterations_missed_total{%(prometheusSelector)s}[5m]) > 0
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus is missing rule evaluations due to slow rule group evaluation.',
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description: 'Prometheus %(prometheusName)s has missed {{ printf "%%.0f" $value }} rule group evaluations in the last 5m.' % $._config,
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},
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},
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{
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alert: 'PrometheusTargetLimitHit',
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expr: |||
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increase(prometheus_target_scrape_pool_exceeded_target_limit_total{%(prometheusSelector)s}[5m]) > 0
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus has dropped targets because some scrape configs have exceeded the targets limit.',
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description: 'Prometheus %(prometheusName)s has dropped {{ printf "%%.0f" $value }} targets because the number of targets exceeded the configured target_limit.' % $._config,
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},
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},
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{
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alert: 'PrometheusLabelLimitHit',
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expr: |||
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increase(prometheus_target_scrape_pool_exceeded_label_limits_total{%(prometheusSelector)s}[5m]) > 0
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus has dropped targets because some scrape configs have exceeded the labels limit.',
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description: 'Prometheus %(prometheusName)s has dropped {{ printf "%%.0f" $value }} targets because some samples exceeded the configured label_limit, label_name_length_limit or label_value_length_limit.' % $._config,
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},
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},
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{
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alert: 'PrometheusScrapeBodySizeLimitHit',
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expr: |||
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increase(prometheus_target_scrapes_exceeded_body_size_limit_total{%(prometheusSelector)s}[5m]) > 0
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus has dropped some targets that exceeded body size limit.',
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description: 'Prometheus %(prometheusName)s has dropped {{ printf "%%.0f" $value }} targets because some targets exceeded the configured body_size_limit.' % $._config,
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},
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},
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{
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alert: 'PrometheusScrapeSampleLimitHit',
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expr: |||
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increase(prometheus_target_scrapes_exceeded_sample_limit_total{%(prometheusSelector)s}[5m]) > 0
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'warning',
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},
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annotations: {
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summary: 'Prometheus has failed scrapes that have exceeded the configured sample limit.',
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description: 'Prometheus %(prometheusName)s has failed {{ printf "%%.0f" $value }} scrapes because some targets exceeded the configured sample_limit.' % $._config,
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},
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},
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{
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alert: 'PrometheusTargetSyncFailure',
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expr: |||
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increase(prometheus_target_sync_failed_total{%(prometheusSelector)s}[30m]) > 0
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||| % $._config,
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'for': '5m',
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labels: {
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severity: 'critical',
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},
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annotations: {
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summary: 'Prometheus has failed to sync targets.',
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description: '{{ printf "%%.0f" $value }} targets in Prometheus %(prometheusName)s have failed to sync because invalid configuration was supplied.' % $._config,
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},
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},
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] + if $._config.prometheusHAGroupLabels == '' then self.rulesWithoutHA else self.rulesWithHA,
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rulesWithoutHA:: [
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{
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alert: 'PrometheusErrorSendingAlertsToAnyAlertmanager',
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expr: |||
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min without (alertmanager) (
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rate(prometheus_notifications_errors_total{%(prometheusSelector)s,alertmanager!~`%(nonNotifyingAlertmanagerRegEx)s`}[5m])
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/
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rate(prometheus_notifications_sent_total{%(prometheusSelector)s,alertmanager!~`%(nonNotifyingAlertmanagerRegEx)s`}[5m])
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)
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* 100
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> 3
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'critical',
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},
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annotations: {
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summary: 'Prometheus encounters more than 3% errors sending alerts to any Alertmanager.',
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description: '{{ printf "%%.1f" $value }}%% minimum errors while sending alerts from Prometheus %(prometheusName)s to any Alertmanager.' % $._config,
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},
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},
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],
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rulesWithHA:: [
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{
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alert: 'PrometheusErrorSendingAlertsToAnyAlertmanager',
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expr: |||
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min by (%(prometheusHAGroupLabels)s) (
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rate(prometheus_notifications_errors_total{%(prometheusSelector)s,alertmanager!~`%(nonNotifyingAlertmanagerRegEx)s`}[5m])
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/
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rate(prometheus_notifications_sent_total{%(prometheusSelector)s,alertmanager!~`%(nonNotifyingAlertmanagerRegEx)s`}[5m])
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)
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* 100
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> 3
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||| % $._config,
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'for': '15m',
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labels: {
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severity: 'critical',
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},
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annotations: {
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summary: 'Each Prometheus server in an HA group encounters more than 3% errors sending alerts to any Alertmanager.',
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description: '{{ printf "%%.1f" $value }}%% minimum errors while sending alerts from any Prometheus server in HA group %(prometheusHAGroupName)s to any Alertmanager.' % $._config,
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},
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},
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{
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alert: 'PrometheusHAGroupNotIngestingSamples',
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expr: |||
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max by (%(prometheusHAGroupLabels)s) (
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rate(prometheus_tsdb_head_samples_appended_total{%(prometheusSelector)s}[5m])
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and
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(
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sum without(scrape_job) (prometheus_target_metadata_cache_entries{%(prometheusSelector)s}) > 0
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or
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sum without(rule_group) (prometheus_rule_group_rules{%(prometheusSelector)s}) > 0
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)
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)
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<= 0
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||| % $._config,
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'for': '10m',
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labels: {
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severity: 'critical',
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},
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annotations: {
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summary: 'A whole Prometheus HA group is not ingesting samples.',
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description: 'None of the Prometheus instances in HA group %(prometheusHAGroupName)s is ingesting any samples.' % $._config,
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},
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},
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// Both the following critical alerts, PrometheusHAGroupDown and
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// PrometheusHAGroupCrashlooping, fire if a whole HA group is
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// unhealthy. It is implied that a generic warning alert is in place
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// for individual instances being down or crashlooping.
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{
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alert: 'PrometheusHAGroupDown',
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expr: |||
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(
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count by (%(prometheusHAGroupLabels)s) (
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avg_over_time(up{%(prometheusSelector)s}[5m]) < 0.5
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)
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/
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count by (%(prometheusHAGroupLabels)s) (
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up{%(prometheusSelector)s}
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)
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)
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> 0.5
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||| % $._config,
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'for': '5m',
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labels: {
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severity: 'critical',
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},
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annotations: {
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summary: 'More than half of the Prometheus instances within the same HA group are down.',
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description: '{{ $value | humanizePercentage }} of Prometheus instances within the %(prometheusHAGroupName)s HA group have been up for less than half of the last 5m.' % $._config,
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},
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},
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{
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alert: 'PrometheusHAGroupCrashlooping',
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expr: |||
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(
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prometheus_tsdb_clean_start{%(prometheusSelector)s} == 0
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and
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|
(
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count by (%(prometheusHAGroupLabels)s) (
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changes(process_start_time_seconds{%(prometheusSelector)s}[1h]) > 1
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)
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|
/
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count by (%(prometheusHAGroupLabels)s) (
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up{%(prometheusSelector)s}
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)
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)
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> 0.5
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)
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or
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(
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count by (%(prometheusHAGroupLabels)s) (
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changes(process_start_time_seconds{%(prometheusSelector)s}[30m]) > 4
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)
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/
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count by (%(prometheusHAGroupLabels)s) (
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up{%(prometheusSelector)s}
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)
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)
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> 0.5
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||| % $._config,
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'for': '5m',
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labels: {
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severity: 'critical',
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},
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annotations: {
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summary: 'More than half of the Prometheus instances within the same HA group are crashlooping.',
|
|
description: '{{ $value | humanizePercentage }} of Prometheus instances within the %(prometheusHAGroupName)s HA group have had at least 5 total restarts in the last 30m or 2 unclean restarts in the last 1h.' % $._config,
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},
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},
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],
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},
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],
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},
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}
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